Cotton:Polyester
size:
Small size: width 18CM, height 22CM; shoulder strap 50CM (adjustable) recommended around 0-1 years old
Medium: 21CM wide and 26CM high; shoulder strap 50CM (adjustable) recommended for 1-3 years old
Large size: width 22CM, height 26CM; shoulder strap 50CM (adjustable), recommended for 3-5 years old
Large, medium and small size increase front chest safety buckle, anti-lost traction rope
Package included:1*Backpack